Method and apparatus for retaining polycrystalline diamond cutters in a drill bit body of matrix or steel

摘要

As a more friendly, environmentally sounder replacement process for retaining PDC cutters in drill bits, compared to the known high temperature metallic brazing processes, a process is described for using a low temperature resin which cures in the range of 350° F. to 450° F., while having a melting point below 1250° F., to prevent degradation to the PDC cutters usually occurring at 1250° F. in the drill bit repair cycle.